Chain



FIG. 1 is a top plan view of a chain showing our new design;

FIG. 2 is a left elevation view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is an end view thereof;

FIG. 6 is an end view of the opposite side thereof; and,

FIG. 7 is a perspective view thereof.

The ornamental design for a chain, as shown and described.